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http://dx.doi.org/10.3365/KJMM.2012.50.12.883

Effects of Grain Size on Carbon Diffusion in an Ultra-Low Carbon Steel for Hot Press Forming  

Kang, Soo Young (Dept. of Metallurgical & Material Engineering, Inha Technical College)
Publication Information
Korean Journal of Metals and Materials / v.50, no.12, 2012 , pp. 883-889 More about this Journal
Abstract
Carbon diffusion of ultra low carbon steel treated at $880^{\circ}C$ and $930^{\circ}C$ for 10, 30, 60 and 120 minutes was investigated using optical microscopy, SAM, EPMA, and Micro Vickers. The martensite patterns of the specimens treated at $880^{\circ}C$ and $930^{\circ}C$ were different. Martensite in the ferrite region was found in the specimen treated at $880^{\circ}C$ because of grain boundary diffusion. Such phenomena is explained by a carbon diffusion model.
Keywords
HPF (hot press forming); carbon diffusion; ultra low carbon steel; martensite; carbon diffusion model;
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